RY_Guthrie
Member
We are having a 1756 di module that gets a internal state comms failure. It does not fault, but it does cause the system it controls to go down. We have replaced the module and all we have to do is click on module reset and it will come right back up and be ok for several weeks to several months at a time but then may fail every few days in a row. Has anyone seen this before and if so what did they do to correct this? 1756 IB32 B3.1 revision 3.5. Our next thought is to replace the chassis but want to avoid this if possible as we are at this point guessing. Help!!